A
Solids
B
Liquids
C
Gases
D
Vacum
In colloquial speech, speed of sound refers to the speed of sound waves in air. However, the speed of sound varies from substance to substance: typically, sound travels most slowly in gases, faster in liquids, and fastest in solids.
Correct Answered :
Wrong Answered :
A
Conduction
B
Condensation
C
Convection
D
Evaporation
If water vapour (gas) is cooled, it changes to water (liquid). This change is called condensing.
Correct Answered :
Wrong Answered :
A
Ammeter
B
Barometer
C
Galvanometer
D
Manometer
A manometer is a device that calculates the pressure of a gas or vapour; some are made up of a U-shaped tube with a moving liquid column.
Correct Answered :
Wrong Answered :
A
Increase
B
Decrease
C
Remain same
D
None of these
If you add salt to water, you raise the waters boiling point, or the temperature at which it will boil. The temperature needed to boil will increase about 0.5 C for every 58 grams of dissolved salt per kilogram of water.
Correct Answered :
Wrong Answered :
A
Joule
B
Ohm
C
volt
D
Newton
As an amount of energy (being transferred), the SI unit of heat is the joule (J).
Correct Answered :
Wrong Answered :
A
2
B
3
C
4
D
5
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. Transistors are one of the basic building blocks of modern electronics. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit.
Correct Answered :
Wrong Answered :
A
Equal the speed of Light
B
Less than the speed of Light
C
Greater than the speed of Light
D
A or B
Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum. We call this the "speed of light"; nothing can move faster than the speed of light.
Correct Answered :
Wrong Answered :
A
Hydrogen
B
Oxygen
C
Carbon Dioxide
D
Silicon
Hydrogen is the most abundant element in the universe, accounting for about 75 percent of its normal matter, and was created in the Big Bang. Helium is an element, usually in the form of a gas, that consists of a nucleus of two protons and two neutrons surrounded by two electrons.
Correct Answered :
Wrong Answered :
A
Metal
B
Catalyst
C
Alloy
D
Enzymes
Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed.
Correct Answered :
Wrong Answered :
A
190
B
210
C
230
D
250
The human body contains many salts, of which sodium chloride (AKA common table salt) is the major one, making up around 0.4 per cent of the bodys weight at a concentration pretty well equivalent to that in seawater.
Correct Answered :
Wrong Answered :
A
Power of Hydrogen
B
Possibility of Hydrogen
C
Population of Hydrogen
D
Position of Hydrogen
The letters pH stand for potential of hydrogen, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance.
Correct Answered :
Wrong Answered :
A
Impure
B
Raw
C
Pure
D
Refined
Blister copper is partly purified copper with a blistered surface formed during smelting due to the release of gas during cooling.
Correct Answered :
Wrong Answered :
A
Water
B
Fats
C
Both A and B
D
None of these
Vitamin A, also known as retinol, is a fat-soluble vitamin traditionally associated with vision and eye health. The most abundant dietary sources of vitamin A are liver, fish liver oil and butter.
Correct Answered :
Wrong Answered :
A
Water
B
Fats
C
Bomb
D
None of these
There are nine water-soluble vitamins: the B vitamins -- folate, thiamine, riboflavin, niacin, pantothenic acid, biotin, vitamin B6, and vitamin B12 -- and vitamin C. Deficiency of any of these water-soluble vitamins results in a clinical syndrome that may result in severe morbidity and mortality.
Correct Answered :
Wrong Answered :
A
Scurvy
B
Rickets
C
Night Blindness
D
Beri Beri
Severe lack of vitamin D causes rickets, which shows up in children as incorrect growth patterns, weakness in muscles, pain in bones and deformities in joints. This is very rare. However, children who are deficient in vitamin D can also have muscle weakness or sore and painful muscles.
Correct Answered :
Wrong Answered :
A
Smaller number of Red Blood Cells
B
Larger number of Red Blood Cells
C
Smaller number of White Blood Cells
D
Larger number of White Blood Cells
People living in high altitudes (like mountains) usually have a larger number of Red Blood Cells.
Correct Answered :
Wrong Answered :
A
5
B
7
C
6
D
6.5
The average adult has about 1.2 to 1.5 gallons (4.5 to 5.5 liters) of blood circulating inside their body.
Correct Answered :
Wrong Answered :
A
Measles
B
Chicken Pox
C
Beri Beri
D
Diphtheria
Diphtheria is an infection caused by strains of bacteria called Corynebacterium diphtheriae that make toxin.
Correct Answered :
Wrong Answered :
A
Leprosey
B
Tetany
C
Tetanus
D
Actinomycosis
Risus sardonicus or rictus grin is a highly characteristic, abnormal, sustained spasm of the facial muscles that appears to produce grinning. It may be caused by tetanus.
Correct Answered :
Wrong Answered :
A
Oak
B
Pine
C
Banyan
D
Palm
Banyan
Correct Answered :
Wrong Answered :
A
Copper
B
Aluminum
C
Lead
D
Tungsten
Tungsten
Correct Answered :
Wrong Answered :
A
Oxygen
B
Hydrogen Sulphide
C
Carbox dioxide
D
Nitrogen
Hydrogen Sulphide
Correct Answered :
Wrong Answered :
A
Phosphorous
B
Bromine
C
Chlorine
D
Helium
Bromine is a chemical element with symbol Br and atomic number 35. It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Its properties are thus intermediate between those of chlorine and iodine.
Correct Answered :
Wrong Answered :
A
Graphite
B
Silicon
C
Charcoal
D
Phosphorous
Graphite
Correct Answered :
Wrong Answered :
A
Tin
B
Mercury
C
Lead
D
Zinc
#
Correct Answered :
Wrong Answered :
A
Nitrogen
B
Hydrogen
C
Carbon dioxide
D
Oxygen
Incandescent light bulbs are filled with an inert gas like nitrogen, argon, or krypton - so that the filament doesn`t catch fire.
Correct Answered :
Wrong Answered :
A
Sodium Carbonate
B
Calcium Bicarbonate
C
Sodium Bicarbonate
D
Calcium Carbonate
#
Correct Answered :
Wrong Answered :
A
Silicon Dioxide
B
Germanium Oxide
C
A mixture of Germanium Oxide and Silicon dioxide
D
Sodium Silicate
#
Correct Answered :
Wrong Answered :
A
Methane
B
Nitrous oxide
C
Carbon dioxide
D
Hydrogen
The list of Green House Gases are as follows: 1) Water vapor 2) Carbon dioxide 3) Methane 4) Nitrous oxide 5) Ozone 6) Chlorofluorocarbons. Hydrogen is not a Green House Gas.
Correct Answered :
Wrong Answered :
A
Black Solid
B
Red Liquid
C
Colourless Gas
D
Highly Inflammable Gas
Red Liquid
Correct Answered :
Wrong Answered :
A
Graphite
B
Silica
C
Iron Oxide
D
Diamond
Graphite is structurally composed of planes of polycyclic carbon atoms that are hexagonal in orientation. The distance of carbon atoms between planes is longer and therefore the bonding is weaker. Graphite is best suited for lubrication in air. It is a mineral made of loosely bonded sheets of carbon atoms, giving it a slippery texture that makes it a very effective lubricant. This slippery quality also makes graphite a good material for pencil lead because it easily sloughs off onto paper. Graphite is bonded by covalent bond, thus, it is helf by weak intermolecular forces. Since it has weak intermolecular forces, graphite would be slippery and soft enough to act as a lubricant.
Correct Answered :
Wrong Answered :
A
Argon
B
Xenon
C
Helium
D
Krypton
#
Correct Answered :
Wrong Answered :
A
Osmosis
B
Deliquescence
C
Efflorescence
D
Desiccation
#
Correct Answered :
Wrong Answered :
A
3%
B
3.5%
C
2.5%
D
2%
#
Correct Answered :
Wrong Answered :
A
Without any change in the weight of the nail
B
With decrease in the weight of the nail
C
With increase in the weight of the nail
D
Without any change in colour or weight of the nail
#
Correct Answered :
Wrong Answered :
A
Lead
B
Chromium
C
Zinc
D
Tin
#
Correct Answered :
Wrong Answered :
A
Coke is the hardest, graphite is the softest
B
Diamond is the hardest, coke is the softest
C
Diamond is the hardest, graphite is the softest
D
Diamond is the hardest, lamp black is the softest
#
Correct Answered :
Wrong Answered :
A
Transition metals
B
Main group metals
C
Alkali metals
D
Rare metals
#
Correct Answered :
Wrong Answered :
A
Deuterium oxide
B
PH7
C
Rain water
D
Tritium oxide
#
Correct Answered :
Wrong Answered :
A
Hydrogen
B
Carbon
C
Sulphur
D
Oxygen
Hydrogen
Correct Answered :
Wrong Answered :
A
Black paint
B
PVC
C
Teflon
D
Polystyrene
Teflon
Correct Answered :
Wrong Answered :
A
Allotrope
B
Isomers
C
Isomorphs
D
Isotopes
Allotrope
Correct Answered :
Wrong Answered :
A
Medicine
B
Fertilizer
C
Salt
D
Glass
Fertilizer
Correct Answered :
Wrong Answered :
A
Sodium Carbonate
B
Alum
C
Potassium Permanganate
D
Lime
Sodium Carbonate
Correct Answered :
Wrong Answered :
A
Camphor
B
Sulphur
C
Common salt
D
Sugar
Sugar
Correct Answered :
Wrong Answered :
A
Lithium
B
Sodium
C
Francium
D
Cerium
The only liquid elements at standard temperature and pressure are bromine (Br) and mercury (Hg). Although, elements caesium (Cs), rubidium (Rb), Francium (Fr) and Gallium (Ga) become liquid at or just above room temperature.
Correct Answered :
Wrong Answered :
A
Petrol
B
Alcohol
C
Water
D
Kerosene
Kerosene
Correct Answered :
Wrong Answered :
A
Nitrous Oxide
B
Carbon monoxide
C
Sulphur dioxide
D
Hydrogen peroxide
Nitrous Oxide
Correct Answered :
Wrong Answered :
A
Germanium
B
Carbon
C
Silicon
D
Sulphur
Carbon
Correct Answered :
Wrong Answered :
A
Methane, Ethane and Hexane
B
Ethane, Hexane and Nonane
C
Methane, Hexane and Nonane
D
Methane, Butane and Propane
Methane, Butane and Propane
Correct Answered :
Wrong Answered :
A
Compound
B
Element
C
Electrolyte
D
Mixture
Mixture
Correct Answered :
Wrong Answered :
A
Nitrogen
B
Helium
C
Oxygen
D
Argon
Helium
Correct Answered :
Wrong Answered :
A
Copper
B
Chromium
C
Lead
D
Cadmium
Lead
Correct Answered :
Wrong Answered :
A
Mercury
B
Lithium
C
Lead
D
Silver
Lithium
Correct Answered :
Wrong Answered :
A
It has a high specific heat
B
It has no colour
C
It has a high dipole moment
D
It has a high boiling point
It has a high dipole moment
Correct Answered :
Wrong Answered :
A
Ruby
B
Sapphire
C
Emerald
D
Diamond
Diamond
Correct Answered :
Wrong Answered :
A
Decibel
B
Coulomb
C
Hum
D
Cycles
Decibel
Correct Answered :
Wrong Answered :
A
Sound
B
Depth
C
Frequency
D
Distance
Depth
Correct Answered :
Wrong Answered :
A
Speed of aeroplanes
B
Speed of light
C
Stellar distances
D
Speed of rockets
Stellar distances
Correct Answered :
Wrong Answered :
A
White dwarfs
B
Quartz clocks
C
Atomic clocks
D
Pulsars
Atomic clocks
Correct Answered :
Wrong Answered :
A
0.84
B
0.5
C
1.6
D
0.62
0.62
Correct Answered :
Wrong Answered :
A
Power used by a current of one ampere
B
Electromagnetic radio wave frequencies
C
Voltage
D
Electric resistance
Electromagnetic radio wave frequencies
Correct Answered :
Wrong Answered :
A
746 watts
B
748 watts
C
756 watts
D
736 watts
746 watts
Correct Answered :
Wrong Answered :
A
Work
B
Power
C
Electricity
D
Current
Power.
Correct Answered :
Wrong Answered :
A
Commutator
B
Anemometer
C
Ammeter
D
Voltmeter
Ammeter
Correct Answered :
Wrong Answered :
A
Thorium
B
Graphite
C
Radium
D
Heavy water (D2O)
A moderator is a material used in a nuclear reactor to slow down the neutrons produced from fission. By slowing the neutrons down the probability of a neutron interacting with Uranium-235 nuclei is greatly increased thereby maintaining the chain reaction.
Heavy water (D2O) is used as a moderator in nuclear reactor. It containing significantly more than the natural proportions (one in 6,500) of heavy hydrogen (deuterium, D) atoms to ordinary hydrogen atoms. Heavy water is used as a moderator in some reactors because it slows down neutrons effectively and also has a low probability of absorption of neutrons.
Correct Answered :
Wrong Answered :
A
Electrons and protons
B
Electrons only
C
Protons only
D
Electrons and Nuclei
Electrons and Nuclei
Correct Answered :
Wrong Answered :
A
Thompson
B
Bohr
C
Rutherford
D
Einstein
Rutherford
Correct Answered :
Wrong Answered :
A
Gravitational forces
B
Exchange forces
C
Coulombic forces
D
Magnetic forces
Exchange forces
Correct Answered :
Wrong Answered :
A
Natural rubber
B
Starch
C
Cellulose
D
None of these
Natural rubber
Correct Answered :
Wrong Answered :
A
Carbon
B
Silicon
C
Sulphur
D
Phosphorous
Sulphur
Correct Answered :
Wrong Answered :
A
Displacement
B
Acceleration
C
Inertia
D
Velocity
Inertia
Correct Answered :
Wrong Answered :
A
Bacteria
B
Fungus
C
Helminth
D
Virus
Virus
Correct Answered :
Wrong Answered :
A
Phon
B
Deci
C
Decibel
D
Decimal
Decibel
Correct Answered :
Wrong Answered :
A
Ionosphere
B
Ozone layer
C
Troposphere
D
Magnetosphere
Ozone layer
Correct Answered :
Wrong Answered :
A
Celsius
B
Fahrenheit
C
Kelvin
D
All of these
Kelvin
Correct Answered :
Wrong Answered :
A
Isoclines
B
Isotones
C
Isobars
D
Isotopes
The atoms of different elements having same mass number but different atomic number are known as isobars.
Correct Answered :
Wrong Answered :
A
Amphipathic hydrocarbon solvent
B
Hydrophobic solvent
C
Non-polar solvent
D
Polar solvent
Correct Answered :
Wrong Answered :
A
Centrifugation
B
Amalgamation
C
Electrostriction
D
Electroplating
The process of depositing a layer of any desired metal on another material by means of electricity is called electroplating.
Correct Answered :
Wrong Answered :
A
25 Hz
B
250 Hz
C
25000 Hz
D
2500 Hz
25000 Hz
Correct Answered :
Wrong Answered :
A
Ant
B
Tomato
C
Ginger
D
Apple
A
Force
B
Voltage
C
Current
D
Resistance
A
Melatonin
B
Serotonin
C
Morphine
D
Oxytocin
A
Ultrasonic Waves
B
Micro Waves
C
Light Waves
D
Infrared Waves
Ultrasonic Waves
Correct Answered :
Wrong Answered :
A
Ampere
B
Candela
C
Kelvin
D
Mole
Kelvin
Correct Answered :
Wrong Answered :
A
Vitamin K
B
Vitamin D
C
Vitamin C
D
Vitamin A
Vitamin D
Correct Answered :
Wrong Answered :
A
Biomass
B
Ecological Pyramid
C
Ecological Niche
D
Ecotone
Ecological Niche
Correct Answered :
Wrong Answered :
A
Montreal Protocol
B
Kyoto Protocol
C
Cartagena Protocol
D
Nagoya Protocol
Montreal Protocol
Correct Answered :
Wrong Answered :
A
Sun
B
Biofuels
C
Liquified Petroleum Gas (LPG)
D
Diesel
The Sun is the primary source of energy for Earth`s climate system is the first of seven Essential Principles of Climate Sciences. Principle 1 sets the stage for understanding Earth`s climate system and energy balance. The Sun warms the planet, drives the hydrologic cycle, and makes life on Earth possible. Each second, more than four million tonnes of matter are converted into energy within the Sun`s core, producing neutrinos and solar radiation.
Correct Answered :
Wrong Answered :
A
Battery
B
Solar Energy
C
Generator
D
Electrical Fuse
The device which converts mechanical energy into electrical energy.is Electric generator.
Correct Answered :
Wrong Answered :
A
Mica
B
Quartz
C
Diamond
D
Rubber
Rubber
Correct Answered :
Wrong Answered :
A
Conventional
B
Non-Renewable
C
Non-Conventional
D
Exhaustible
Non-Conventional
Correct Answered :
Wrong Answered :
A
Mesosphere
B
Troposphere
C
Exosphere
D
Stratosphere
Stratosphere
Correct Answered :
Wrong Answered :
A
Oxygen
B
Hydrogen
C
Carbon Dioxide
D
Nitrogen
Nitrogen
Correct Answered :
Wrong Answered :